diff options
Diffstat (limited to 'drivers/video/s3c-fb.c')
| -rw-r--r-- | drivers/video/s3c-fb.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c index 6817d187d46e..3fa7911ac906 100644 --- a/drivers/video/s3c-fb.c +++ b/drivers/video/s3c-fb.c @@ -48,7 +48,7 @@ #undef writel #define writel(v, r) do { \ printk(KERN_DEBUG "%s: %08x => %p\n", __func__, (unsigned int)v, r); \ - __raw_writel(v, r); } while(0) + __raw_writel(v, r); } while (0) #endif /* FB_S3C_DEBUG_REGWRITE */ /* irq_flags bits */ @@ -182,6 +182,7 @@ struct s3c_fb_vsync { /** * struct s3c_fb - overall hardware state of the hardware + * @slock: The spinlock protection for this data sturcture. * @dev: The device that we bound to, for printing, etc. * @regs_res: The resource we claimed for the IO registers. * @bus_clk: The clk (hclk) feeding our interface and possibly pixclk. @@ -195,6 +196,7 @@ struct s3c_fb_vsync { * @vsync_info: VSYNC-related information (count, queues...) */ struct s3c_fb { + spinlock_t slock; struct device *dev; struct resource *regs_res; struct clk *bus_clk; @@ -518,7 +520,7 @@ static int s3c_fb_set_par(struct fb_info *info) data = VIDTCON2_LINEVAL(var->yres - 1) | VIDTCON2_HOZVAL(var->xres - 1); - writel(data, regs +sfb->variant.vidtcon + 8 ); + writel(data, regs + sfb->variant.vidtcon + 8); } /* write the buffer address */ @@ -947,6 +949,8 @@ static irqreturn_t s3c_fb_irq(int irq, void *dev_id) void __iomem *regs = sfb->regs; u32 irq_sts_reg; + spin_lock(&sfb->slock); + irq_sts_reg = readl(regs + VIDINTCON1); if (irq_sts_reg & VIDINTCON1_INT_FRAME) { @@ -963,6 +967,7 @@ static irqreturn_t s3c_fb_irq(int irq, void *dev_id) */ s3c_fb_disable_irq(sfb); + spin_unlock(&sfb->slock); return IRQ_HANDLED; } @@ -1304,6 +1309,7 @@ static void s3c_fb_clear_win(struct s3c_fb *sfb, int win) static int __devinit s3c_fb_probe(struct platform_device *pdev) { + const struct platform_device_id *platid; struct s3c_fb_driverdata *fbdrv; struct device *dev = &pdev->dev; struct s3c_fb_platdata *pd; @@ -1312,7 +1318,8 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) int win; int ret = 0; - fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data; + platid = platform_get_device_id(pdev); + fbdrv = (struct s3c_fb_driverdata *)platid->driver_data; if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) { dev_err(dev, "too many windows, cannot attach\n"); @@ -1337,6 +1344,8 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev) sfb->pdata = pd; sfb->variant = fbdrv->variant; + spin_lock_init(&sfb->slock); + sfb->bus_clk = clk_get(dev, "lcd"); if (IS_ERR(sfb->bus_clk)) { dev_err(dev, "failed to get bus clock\n"); @@ -1547,7 +1556,7 @@ static int s3c_fb_resume(struct device *dev) return 0; } -int s3c_fb_runtime_suspend(struct device *dev) +static int s3c_fb_runtime_suspend(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct s3c_fb *sfb = platform_get_drvdata(pdev); @@ -1567,7 +1576,7 @@ int s3c_fb_runtime_suspend(struct device *dev) return 0; } -int s3c_fb_runtime_resume(struct device *dev) +static int s3c_fb_runtime_resume(struct device *dev) { struct platform_device *pdev = to_platform_device(dev); struct s3c_fb *sfb = platform_get_drvdata(pdev); |